Bridge Safety in Wisconsin

14,498 bridges — 976 Poor condition — avg age 40 years.

Bridge Inventory

Total Bridges14,498
Good Condition6,749
Fair Condition6,773
Poor Condition976
Oldest BridgeBuilt 1887
Average Age40 years

Condition Summary

% Good46.6%
% Fair46.7%
% Poor6.7%

Highest-Traffic Poor Condition Bridges in Wisconsin

Poor condition bridges sorted by daily traffic — the most urgent safety concerns.

Bridge Condition Year Built ADT Length
LRD MITCHELL BLVD Poor 1959 79,000
CTH W MILL RD (CTH S) Poor 1967 58,500
CTH W MILL RD (CTH S) Poor 1967 58,500
E BR WILSON CREEK Poor 1959 35,500
LINCOLN CREEK Poor 1958 33,971
WISCONSIN RIVER 31 Poor 1915 28,144
ST LOUIS R; RR STREET Poor 1961 28,098
STH 24-FOREST HOME AVE Poor 1963 26,700
PHEASANT BRANCH CREEK Poor 1956 22,500
LINCOLN CREEK Poor 1936 21,845
LAKE MONONA Poor 1968 21,600
LAKE MONONA Poor 1975 21,600
LAKE MONONA Poor 1966 21,600
LAKE MONONA Poor 1968 21,600
STH 73 Poor 1963 21,200
OTTER CREEK Poor 1988 20,800
CNW RR Poor 1939 20,130
LRD MISSOURI RD Poor 1963 19,150
KINNICKINNICK RIVER Poor 1987 19,025
LRD W PIERCE ST Poor 1933 18,735

Oldest Bridges in Wisconsin

Bridge Condition Year Built Age ADT
TURTLE CREEK Poor 1887 139 yrs 474
BR MCCARTNEY BRANCH Poor 1890 136 yrs 240
S BR LITTLE WOLF RIVER Good 1890 136 yrs 597
S BR LITTLE WOLF RIVER Poor 1890 136 yrs 56
W FK KICKAPOO RIVER Fair 1891 135 yrs 205
MILWAUKEE RIVER Poor 1891 135 yrs
BLACK OTTER CREEK Fair 1892 134 yrs 5,151
SEELEY CREEK Fair 1894 132 yrs 27
DRAINAGE RAVINE Fair 1896 130 yrs 58
YAHARA RIVER Fair 1897 129 yrs 450

Bridge Safety in Wisconsin

Bridge condition data for Wisconsin comes from the FHWA National Bridge Inventory. All publicly accessible bridges with a span over 20 feet are inspected at least every 24 months by certified bridge inspectors.